KR20200093858A - Manufacturing method of molding velcro - Google Patents

Manufacturing method of molding velcro Download PDF

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Publication number
KR20200093858A
KR20200093858A KR1020190011104A KR20190011104A KR20200093858A KR 20200093858 A KR20200093858 A KR 20200093858A KR 1020190011104 A KR1020190011104 A KR 1020190011104A KR 20190011104 A KR20190011104 A KR 20190011104A KR 20200093858 A KR20200093858 A KR 20200093858A
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KR
South Korea
Prior art keywords
resin
mold
velcro
velcro fastener
adhesive
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KR1020190011104A
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Korean (ko)
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김승헌
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김승헌
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Priority to KR1020190011104A priority Critical patent/KR20200093858A/en
Publication of KR20200093858A publication Critical patent/KR20200093858A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/20—Making multilayered or multicoloured articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/72—Heating or cooling
    • B29C45/73—Heating or cooling of the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2405/00—Adhesive articles, e.g. adhesive tapes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The present invention relates to a method for manufacturing injected Velcro using a mold. The method comprises the steps of: applying a resin to an inner surface of a mold, on which various patterns are engraved; heating, before moving the mold to a heating kiln composed of an upper plate and a lower plate, heating the upper plate of the heating kiln to 380-420°C and heating the lower plate of the heating kiln to 250-300°C; moving the mold into the heating kiln and thermally curing the paste PVC resin by means of heat applied from the heating kiln; removing the mold from the heating kiln and printing an adhesive on a rear surface of a Velcro fastener where a brush is not formed using silk screen printing; laminating the Velcro fastener having the adhesive printed thereon by the silk screen printing on an upper surface of the resin to temporarily attach the Velcro fastener and resin to each other; compressing and completely attaching the resin and the Velcro fastener that are temporarily attached to each other using a thermal press heated to a specific temperature; rapidly cooling the resin and the Velcro fastener within the mold; and removing the resin and the Velcro fastener that are cooled from the mold.

Description

효율적인 사출 벨크로를 만드는법{Manufacturing method of molding velcro}How to make an efficient injection velcro {Manufacturing method of molding velcro}

본 발명은 벨크로 제조방법에 관한 것으로, 더욱 상세하게는 벨크로 파스너의 변형 없이 수지와 간단하면서 견고하게 접착되고, 장시간 사용시에도 탈리가 방지되어 제품의 질을 향상함은 물론 금형을 통해 대량생산이 가능하도록 하는 사출 벨크로 제조방법에 관한 것이다The present invention relates to a method of manufacturing velcro, and more specifically, it is simple and firmly adhered to a resin without deformation of a velcro fastener, and it is prevented from being detached even when used for a long time, thereby improving the quality of the product and of course mass production through a mold It relates to an injection velcro manufacturing method

일반적으로 벨크로는 성긴 실코로 서로 달라붙게 된 나일론제의 접착포로서, 일명 매직테이프, 찍찍이라고도 한다.In general, Velcro is a nylon adhesive cloth that sticks to each other with coarse silk, also known as magic tape and squeak.

이러한 벨크로의 제조방법은 페이스트 피브이씨 수지(페이스트 폴리염화비닐수지 - 이하, 수지로 통칭한다) 또는 페이스트 피브이씨 수지와 가소제가 혼합된 상태로 금형틀에 얇게 도포하고 나서 일정한 온도로 가열하여 페이스트 피브이씨 수지를 열경화시킨다. 금형을 이용하여 수지를 열경화시킬 때 상열판, 하열판으로 이루어진 열가마를 사용하는데, 상승하는 열의 특성상 상하열판이 동일한 온도로 설정되면 수지에 전도되는 열은 위치마다 달라지므로 수지에 열응력이 잔류 된다. 열응력의 잔류는 궁극적으로 벨크로 제품의 변형을 가져올 수 있고, 잔류응력이 해소되는 과정에서 제품이 취약해져 벨크로 제품의 수명을 단축시키는 원인이 된다. 열경화된 수지의 상면에 접착제를 이용하여 벨크로 파스너를 접착하고 나서 일정 압력을 가압함에 따라 벨크로가 제조된다.The method of manufacturing such a Velcro is coated with a thin film of a paste with a PVC resin (pasted polyvinyl chloride resin-hereinafter, collectively referred to as a resin) or a plasticizer, and heated at a constant temperature. Paste the PV resin to heat cure. When the resin is thermally cured using a mold, a thermal kiln made of an upper plate and a lower plate is used. Due to the nature of the rising heat, when the upper and lower plates are set to the same temperature, the heat conducting to the resin varies from position to position, so the thermal stress on the resin Will remain. Residual thermal stress can ultimately lead to deformation of the Velcro product, and the product becomes vulnerable in the process of releasing the residual stress and shortens the life of the Velcro product. A Velcro is manufactured by applying a pressure to a Velcro fastener using an adhesive on the top surface of the thermoset resin and then pressing a certain pressure.

이와 같이 수지와 벨크로 파스너를 접착하면, 수지와 벨크로 파스너가 열팽창률, 신축성 등 물리화학적 성질이 다른 이형재료이기 시간이 지나면 탈리되는 경우가 있고, 접착제 자체가 수지와 벨크로 파스너 사이에 끼인 상태이므로 고르게 도포되지 않으면 단층이 형성되어 제품의 품질을 떨어뜨린다. 특히 접착제는 접착성능이 저하되지 않는 범위에서 최소량만 사용하는 것이 탈리 방지나 제품의 품질 측면에서 가장 좋은데, 지금까지 해오던 붓질이나 분사 방식으로 접착제를 도포해서는 균일하고 편평한 접착제면을 얻기 힘들고 접착제 사용량을 감소시키는데도 한계가 있었다.When the resin and the velcro fastener are adhered in this way, the resin and the velcro fastener are release materials that have different physicochemical properties, such as thermal expansion coefficient and elasticity, and they may peel off over time, and the adhesive itself is stuck between the resin and the velcro fastener. If not applied, a single layer is formed, degrading the quality of the product. In particular, it is best to use only the smallest amount of adhesives in the range that does not degrade the adhesive performance in terms of prevention of desorption or product quality. It is difficult to obtain a uniform and flat adhesive surface by applying adhesives with brushing or spraying methods that have been done so far, and the amount of adhesive used There was a limit to reducing it.

본 발명은 전술한 바와 같은 문제점을 해결하기 위한 것으로, 금형에 수지를 도포하여 경화시킬 때 수지에 균일한 열공급이 이루어져 잔류 열응력이 남아 있지 않도록 하고, 경화된 수지와 벨크로 파스너를 접착할 때, 접착제가 수지면에 접착력이 저하되지 않는 범위의 최소량을 도포되고 접착제의 적층현상이나 몰림 현상이 방지되어 접착제 두께 차이에 의한 미세한 단층 현상이나 제품 완성후 장시간 경과후 발생되는 수지와 벨크로 파스너 간의 탈리 현상이 방지되는 사출 벨크로 제조방법을 제공하고자 한다.The present invention is to solve the problems as described above, when the resin is applied to the mold and cured, a uniform heat supply is made to the resin to prevent residual thermal stress from remaining, and when the cured resin and the Velcro fastener are adhered, A minimum amount of the adhesive does not degrade the adhesive strength on the resin surface, and the lamination or flocculation of the adhesive is prevented, resulting in a fine single-layer phenomenon due to the difference in the thickness of the adhesive or a tally phenomenon between the resin and the Velcro fastener that occurs after a long time after product completion. It is intended to provide a method for preventing injection velcro.

본 발명은 상기의 목적을 달성하기 위하여 금형을 이용한 사출 벨크로 제조방법에 있어서, 각종 문양이 내면에 각인된 금형 내에 수지를 도포하는 단계, 상기 금형을 열가마로 이동시키기 전에 상열판과 하열판으로 이루어진 열가마의 상열판을 380 ~ 420℃로 하고, 하열판은 250 ~ 300℃로 설정하는 단계, 상기 금형을 열가마로 이동시켜 열가마로부터 가해지는 열에 의해 상기 수지를 열경화시키는 단계, 상기 열가마로부터 금형을 탈거하고, 브러쉬가 형성되지 않는 벨크로 파스너 의 후면에 접착제를 실크스크린 인쇄하는 단계, 상기 수지의 상면에 접착제가 실크스크린 인쇄된 벨크로 파스너를 적층하여 가접착하는 단계, 상기 가접착된 수지와 벨크로 파스너를 특정온도로 가열된 열롤러 프레스로 가압하여 완전히 접착하는 단계, 상기 금형내의 수지와 벨크로 파스너를 급속 냉각하는 단계, 상기 냉각된 수지와 벨크로 파스너를 금형에서 탈거하는 단계를 포함하여 이루어진 것을 특징으로 하는 사출 벨크로 제조방법을 제공한다.In the present invention, in order to achieve the above object, in a method of manufacturing an injection velcro using a mold, the step of applying a resin in a mold in which various patterns are imprinted on the inner surface, the upper and lower plates before moving the mold to a thermal kiln. Setting the upper heating plate of the formed kiln to 380 to 420°C, and setting the lower heat plate to 250 to 300°C, heat-curing the resin by heat applied from the thermal kiln by moving the mold to the thermal kiln, the heat Removing the mold from the kiln, and silkscreen printing the adhesive on the back side of the velcro fastener where the brush is not formed, and temporarily bonding the adhesive on the upper surface of the resin by laminating the velcro fastener on which the adhesive is silkscreen printed, and the temporary adhesion Comprising the steps of completely bonding the resin and the Velcro fastener by pressing with a hot roller press heated to a specific temperature, rapidly cooling the resin and the Velcro fastener in the mold, and removing the cooled resin and the Velcro fastener from the mold. It provides an injection velcro manufacturing method characterized in that made.

본 발명에 따르면, 금형에 도포된 수지를 경화시킬 때 금형을 가열하는 열가마의 상열판과 하열판의 온도설정을 달리하여 수지에 공급되는 열이 온도 차이 없이 거의 균일하게 함으로써 경화된 수지 내부에 잔류 열응력이 남아 있지 않도록 하여 제품의 결함을 방지하고 수명을 연장시킨다. 또한 벨크로 파스너 후면에 접착제를 실크 스크린 인쇄함으로써 미세한 접착제 액구 하나 하나를 전체면에 정배열시켜 접착제가 중복되어 적층되거나 단층이 형성되지 않고 접착성능이 저하되지 않는 최소량만 사용할 수 있도록 함으로써 제품의 품질을 높이고 장시간 경과하여도 수지와 벨크로 파스너 간의 탈리 현상이 방지된다.According to the present invention, when curing the resin applied to the mold, the temperature of the upper and lower heating plates of the heating kiln which heats the mold is varied to make the heat supplied to the resin almost uniform without temperature difference, thereby curing the resin. Prevents residual thermal stress and prevents product defects and extends life. In addition, by silk screen printing the adhesive on the back side of the Velcro fastener, the fine quality of the liquid is aligned on the entire surface, so that the minimum amount of adhesive do not overlap or form a single layer and the adhesive performance does not deteriorate. Even after a long period of time, the desorption phenomenon between the resin and the Velcro fastener is prevented.

도 1은 본 발명에 따른 사출 벨크로 제조방법을 나타낸 블록도이다.
도 2는 본 발명에 따른 사출 벨크로 제조공정을 순서대로 나타낸 것이다.
도 3은 본 발명에 따른 벨트로 파스너 후면에 실크스크린 인쇄과정을 나타낸 것이다.
도 4는 본 발명에 따라 제조된 사출 벨크로이다.1 is a block diagram showing an injection velcro manufacturing method according to the present invention.
Figure 2 shows the injection velcro manufacturing process according to the present invention in order.
Figure 3 shows the silk screen printing process on the back of the fastener with a belt according to the present invention.
4 is an injection velcro made in accordance with the present invention.

첨부된 도면을 참조하여 본 발명을 상세히 설명하면 다음과 같다.The present invention will be described in detail with reference to the accompanying drawings.

도 1 내지 도 4에 도시된 바와 같이, 수지(10)가 담겨져서 특정 두께로 도포 되도록 금형(30)이 구비되어 있고, 금형 내면에는 문자, 그림, 무늬 등 각종 문양이 각인되어 있다. 수지(10)를 열경화시키기 위해 상기 수지(10)가 도포된 금형(30)을 특정온도(250 ~ 300℃)에서 일정한 시간(30~ 60초)동안 열을 가할 수 있도록 하는 열가마(40)가 구비된다. 상기 열가마(40)는 상하로 분리되어 상열판(4 1 to 4, a mold 30 is provided so that the resin 10 is contained and applied to a specific thickness, and various patterns such as letters, pictures, patterns, etc. are imprinted on the inner surface of the mold. In order to heat-cure the resin 10, a thermal kiln 40 that allows heat to be applied to the mold 30 coated with the resin 10 at a specific temperature (250 to 300°C) for a certain time (30 to 60 seconds). ) Is provided. The heating kiln 40 is separated up and down the upper heating plate (4

2)과 하열판(44)으로 이루어지는데, 상열판(42)은 380 ~ 420℃, 하열판(44)은 250 ~ 300℃ 로 설정되어야 한다. 또한, 열경화된 수지의 상면에 적층되어 상기 수지에 접착되도록 브러쉬(22)가이 구비된 벨크로 파스너(20)가 구비된다.2) and the lower plate 44, the upper plate 42 should be set to 380 ~ 420 ℃, the lower plate 44 is set to 250 ~ 300 ℃. In addition, the velcro fastener 20 is provided with a brush 22 so as to be laminated on the upper surface of the thermoset resin to adhere to the resin.

상기 수지(10)와 벨크로 파스너(20)의 상부에는 상기 수지(10)와 벨크로 파스너(20)를 접착하도록 일정한 온도로 가열됨은 물론 압력을 가하는 열롤러 프레스(50)가 회전 가능하게 설치되어 있다. 금형(30)과 별도로 수지(10)와 벨크로 파스너(20)가 접착된 금형이 얹혀져 올려짐과 함께 냉각수가 순환되는 방식으로 금형을 냉각시키는 냉각장치(60)가 구비된다. 상기와 같이 구성된 본 발명에 따른 사출 벨크로 제조과정을 설명하면 다음과 같다. 먼저, 내면에 각종 문양이 각인된 금형(30)내로 수지(10)를 일정두께로 골고루 도포하고 나서 상기 수지(10)가 도포된 금형(30)을 열가마 내로 넣는다. 이때 금형(30)의 온도는 250 ~ 300℃ 유지해야 하는데 상열판(42)과 하열판(44)의 온도가 동일하면 상승하는 열의 물리적 특성상 금형(30)의 하부와 상부의 온도 차이가 커져 수지(10)가 열경화될 때 수지(10)의 특정 부분에 열응력이 잔류한다.열응력의 잔류는 장시간이 지나면 해소되는 과정에서 금속의 취성과 같은 형태로 표출되어 그 부분이 약해지므로 쉽게 손상되고 수지(10)의 유연성을 저하시키며, 수지(10)에 결합되는 벨크로 파스너(20) 사이의 접착력을 약하시키는 원인이 된다. 따라서 상열판의 온도는 380 ~ 420℃로 하고 하열판은 250 ~ 300℃로 하여 수지(10) 전체면에 균일한 온도의 열공급이 이루어지도록 한다. 열가마(40)에서 일정 시간동안 가해지는 온도에 의해서 수지(10)가 녹으면서 열경화하는데, 이때 수지(10)는 95% 정도로 열경화 함에 따라 금형(30)의 내면에 골고루 확산 되어 상면이 편평하게 펼쳐지게 된다. 수지(10)가 열경화된 상태에서 금형(30)을 열가마(40)에서 빼내고, 브러쉬(22)가 형성되지 않은 편평한 벨크로 파스너(20)의 후면에 접착제를 실크스크린 인쇄한다. 필요에 따라서는 수지의 상면에 접착제를 실크스크린 인쇄 할 수 있다.접착제가 실크스크린 인쇄된 벨크로 파스너(20)를 수지(10) 상면에 고르게 펼쳐가면서 적층하여 가접착시킨다. The resin 10 and the Velcro fastener 20 are heated at a constant temperature so as to adhere the Resin 10 and the Velcro fastener 20, and a thermal roller press 50 for applying pressure is rotatably installed. . Separately from the mold 30, a cooling device 60 is provided to cool the mold in a manner in which cooling water is circulated with a mold on which the resin 10 and the Velcro fastener 20 are adhered. The manufacturing process of the injection velcro according to the present invention configured as described above is as follows. First, the resin 10 is uniformly coated with a predetermined thickness into the mold 30 in which various patterns are imprinted on the inner surface, and then the mold 30 coated with the resin 10 is put into a thermal kiln. At this time, the temperature of the mold 30 should be maintained at 250 to 300°C. If the temperatures of the upper and lower plates 42 and 44 are the same, the temperature difference between the lower and upper portions of the mold 30 increases due to the physical characteristics of the rising heat. When (10) is thermally cured, thermal stress remains on a specific portion of the resin (10). The residual thermal stress is easily damaged because it is expressed in the same form as the brittleness of metal in the process of being resolved after a long time. It becomes the cause of deteriorating the flexibility of the resin 10 and weakening the adhesive force between the Velcro fasteners 20 coupled to the resin 10. Therefore, the temperature of the upper heating plate is 380 to 420°C, and the lower heating plate is 250 to 300°C, so that heat supply at a uniform temperature is provided to the entire surface of the resin 10. The resin 10 is melted and thermally cured by the temperature applied for a certain period of time in the thermal kiln 40. At this time, the resin 10 is evenly diffused on the inner surface of the mold 30 as it is thermally cured to about 95%. It spreads flat. The mold 30 is taken out of the kiln 40 in a state where the resin 10 is heat-cured, and the adhesive is silk-screen printed on the back side of the flat Velcro fastener 20 on which the brush 22 is not formed. If necessary, the adhesive can be silk-screen printed on the upper surface of the resin. The adhesive is laminated by temporarily spreading the Velcro fastener 20 on which the silk-screen is printed, evenly spread on the upper surface of the resin 10.

여기서 접착제는 수지(10)면에 흡수되거나 벨크로 파스너(20)면에 흡수되지 않고 경화되면서 두께를 형성한다.Here, the adhesive is cured without being absorbed by the resin 10 surface or absorbed by the Velcro fastener 20 surface, thereby forming a thickness.

경화된 접착제가 두께를 형성하면 두꺼워질수록 벨크로의 연성이 저하되고, 수지(10)와 벨크로 파스너(20) 와는 이형재료로서 시간이 지나면서 열팽창률, 신축성 등 물리화학적 특성 차이로 인해 수지(10)와 벨크로 파스너(20)의 탈리 현상이 촉진시키는 원인이 되기 때문에 접착력이 저하되지 않는 범위에서 최소량만 사용되어야 한다. 지금까지 접착제가 경화되면서 두께가 최소화 될 수 있도록 하는 방법으로 접착제를 도포하고 붓질하여 얇게 펴거나 분사장치를 이용하여 연무상태로 접착제를 분사함으로써 접착제 사용을 줄이고 균일한 접착제층을 얻는 노력을 하였지만, 도포하여 붓질하는 방법은 아무리 정밀하게 하더라도 접착제가 중첩되면서 접착제층이 균일하지 않고 유동성 때문에 한쪽으로 흘러 미세한 단층이 지는 등의 문제가 발생되고, 분사하는 방법은 균일한 두께로 도포하는데는 유리하지만 과도한 접착제가 도포되어 두께를 최소화시키는데 한계가 있다. 따라서 본 발명에서는The thicker the cured adhesive is, the lower the ductility of the Velcro becomes, and as a release material between the resin 10 and the Velcro fastener 20, the resin (10) due to the difference in physicochemical properties such as thermal expansion coefficient, elasticity over time. ) And the velcro fastener 20 is the cause of the desorption, so it should be used only in the minimum amount in a range that does not degrade the adhesion. As far as the adhesive is cured, efforts have been made to reduce the use of adhesive and obtain a uniform adhesive layer by applying and brushing the adhesive in such a way that the thickness can be minimized and spraying the adhesive in a fume state using a spraying device. The method of applying and brushing, however precise, overlaps with the adhesive, and the adhesive layer is not uniform and flows to one side due to fluidity, causing a problem such as the formation of a fine single layer. There is a limitation in minimizing the thickness by applying the adhesive. Therefore, in the present invention

벨크로 파스너 후면에 접착제를 실크스크린 인쇄하여 도 3에 도시된 바와 같이 액구(80) 하나 하나가 벨크로 파스너(20) 후면에 사방으로 정배열된 상태가 되도록 함으로써 접착제 도포를 균일하게 하면서도 접착제 도포 두께를 최소화 시킬 수 있게 되었다.수지(10)의 상면에 벨크로 파스너(20)를 적층하여 가접착한 후에는 특정온도(200 ~ 250℃)로 가열된 열 롤러 프레스를 회전시키면서 압력을 가함에 따라 수지(10)와 벨크로 파스너(20)를 완전히 접착시킨다.수지(10)와 벨크로 파스너(20)가 완전히 접착되면 냉각장치(60)를 통해 금형(30)내의 수지(10)와 벨크로 파스너(20)를 급냉시켜 수지(10)와 벨크로 파스너(20)를 금형(30)으로 부터 분리하여 사출 벨크로를 완성한다.As the adhesive is silk-screen printed on the back of the Velcro fastener, as shown in Fig. 3, the liquid solution 80 is uniformly arranged in all directions on the back of the Velcro fastener 20, thereby uniformly applying the adhesive and minimizing the thickness of the adhesive. After the temporary adhesion by laminating the Velcro fasteners 20 on the upper surface of the resin 10, the resin 10 was applied while rotating the heat roller press heated to a specific temperature (200 to 250°C) and applying pressure. ) And the Velcro fastener 20 are completely bonded. When the resin 10 and the Velcro fastener 20 are completely bonded, the resin 10 and the Velcro fastener 20 in the mold 30 are rapidly cooled through the cooling device 60. To separate the resin 10 and the velcro fastener 20 from the mold 30 to complete the injection velcro.

10 : 수지 20 : 벨크로 파스너
22 : 브러쉬 30 : 금형
40 : 열가마 42 : 상열판
44 : 하열판 50 : 열롤러 프레스
60 : 냉각장치 80 : 액구10: resin 20: Velcro fastener
22: brush 30: mold
40: kiln 42: upper plate
44: lower plate 50: hot roller press
60: cooling device 80: liquid mouth

Claims (2)

금형을 이용한 사출 벨크로 제조방법에 있어서,
각종 문양이 내면에 각인된 금형 내에 수지를 도포하는 단계;
상기 금형을 열가마로 이동시키기 전에 상열판과 하열판으로 이루어진 열가마의 상열판을 380 ~ 420℃로 하고, 하열판은 250 ~ 300℃로 설정하는 단계;
상기 금형을 열가마로 이동시켜 열가마로부터 가해지는 열에 의해 상기 수지를 열경화시키는 단계;
상기 열가마로부터 금형을 탈거하고, 브러쉬가 형성되지 않는 벨크로 파스너 의 후면에 접착제를 실크스크린 인쇄하는 단계;
상기 수지의 상면에 접착제가 실크스크린 인쇄된 벨크로 파스너를 적층하여 가접착하는 단계;
상기 가접착된 수지와 벨크로 파스너를 특정온도로 가열된 열롤러 프레스로 가압하여 완전히 접착하는 단계;
상기 금형내의 수지와 벨크로 파스너를 급속 냉각하는 단계;
상기 냉각된 수지와 벨크로 파스너를 금형에서 탈거하는 단계;
를 포함하여 이루어진 것을 특징으로 하는 사출 벨크로 제조방법.In the manufacturing method of the injection velcro using a mold,
Applying resin in a mold in which various patterns are imprinted on the inner surface;
Setting the upper plate of the hot plate composed of the upper plate and the lower plate to 380 to 420°C, and setting the lower plate to 250 to 300°C before moving the mold to the hot kiln;
Thermally curing the resin by heat applied from the thermal kiln by moving the mold to a thermal kiln;
Removing the mold from the kiln, and silkscreen printing the adhesive on the back side of the velcro fastener where the brush is not formed;
Temporarily attaching a velcro fastener on which an adhesive is silk-screen-printed on the top surface of the resin;
Completely bonding the temporary resin and the Velcro fastener by pressing with a hot roller press heated to a specific temperature;
Rapidly cooling the resin and velcro fasteners in the mold;
Removing the cooled resin and the Velcro fastener from a mold;
Injection velcro manufacturing method characterized in that it comprises a. 제1항에 있어서,
금형내에서 경화된 수지의 상면에 접착제를 실크스크린 인쇄하는 단계가 더 포함된 것을 특징으로 하는 사출 벨크로 제조방법.According to claim 1,
The method of manufacturing an injection velcro further comprising the step of silk-screen printing an adhesive on the upper surface of the cured resin in the mold.
KR1020190011104A 2019-01-29 2019-01-29 Manufacturing method of molding velcro KR20200093858A (en)

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